[jdk25u] RFR: 8368152: Shenandoah: Incorrect behavior at end of degenerated cycle

[William Kemper]

Not clean, but conflict was trivial to resolve.

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Commit messages:
 - 8368152: Shenandoah: Incorrect behavior at end of degenerated cycle

Changes: https://git.openjdk.org/jdk25u/pull/241/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=241&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368152
  Stats: 143 lines in 5 files changed: 110 ins; 19 del; 14 mod
  Patch: https://git.openjdk.org/jdk25u/pull/241.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/241/head:pull/241

PR: https://git.openjdk.org/jdk25u/pull/241